Listening to new music on the iPhone with nice headphones is a wonderfully personal experience. Listening to new music on the iPhone with your friends through the tiny speakers sucks. And the last thing you want is to share your earbuds. That's just gross. The Sprd the Note app will keep your ears disease-free by sharing any DRM-free iTunes-synced tracks between iPhones.

I'm old enough to remember using cassette tapes but also young enough to know it was already ancient technology. But still, there's something about cassette tapes that interested me more than CDs or MP3s. A strip of freaking tape can hold music? And now that they're pretty much dead, it's sad. Thats why AirCassette is so awesome.